CN110216891A - A kind of power battery plastic-aluminum membrane preparation method - Google Patents
A kind of power battery plastic-aluminum membrane preparation method Download PDFInfo
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- CN110216891A CN110216891A CN201910477413.1A CN201910477413A CN110216891A CN 110216891 A CN110216891 A CN 110216891A CN 201910477413 A CN201910477413 A CN 201910477413A CN 110216891 A CN110216891 A CN 110216891A
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- aluminium foil
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/52—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
- B29C66/026—Chemical pre-treatments
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention discloses a kind of power battery plastic-aluminum membrane preparation methods, comprising the following steps: (1) is passivated processing to the tow sides of aluminium foil, the aluminium foil after obtaining surface passivation；(2) aluminium foil after nylon and surface passivation is carried out by compound rear solidification using compounding machine；(3) composite nylon/aluminium foil and PET film compounding machine are solidified by compound send to curing room of dry type；(4) compound PET film/nylon/aluminium foil and polypropylene film compounding machine are solidified by compound send to curing room of dry type；(5) it will be sent after the cooling of power battery aluminum plastic film to cutting workshop, cut rear inspection by setting specification, packed after detection is qualified；After the present invention is by the way that aluminium foil to be passivated, then with PET film, nylon, polypropylene film it is compound after form the aluminum plastic film with four-layer structure, effectively increase the electrolyte resistance performance and barrier property of aluminum plastic film package material, and the service life of material can be extended.
Description
Technical field
The invention belongs to power batteries to pack technical field of membrane, and in particular to a kind of power battery plastic-aluminum membrane preparation method.
Background technique
With electronic product, the rapid development of mobile phone and electronic traffic, demand and matter of the people to power battery
Amount requires higher and higher, and power battery used in the products such as smart phone, new-energy automobile is mostly lithium battery, aluminum plastic film at present
It is the important component of soft bag lithium ionic cell, is soft-package battery core material, key effect is played for battery lightweight.
Compared to packaging materials such as steel shell, aluminum hull or plastic housings, the advantages such as aluminum plastic film has light weight, thickness is thin, configuration design is flexible,
It has been increasingly becoming the market mainstream.Aluminum plastic film with its excellent barrier ability, puncture-resistant ability, electrolyte stability, heat-resisting quantity and
Insulating properties has broad application prospects in field of lithium ion battery.
Current aluminum plastic film can substantially be divided into three layers: internal layer is adhesive layer, mostly uses polyethylene or polypropylene material, is risen
Cementation is sealed, middle layer is aluminium foil, can prevent the infiltration of outside batteries steam, while preventing the infiltration of electrolyte inside
Out, outer layer is protective layer, mostly uses dystectic polyester or nylon material, has very strong mechanical performance, prevents external force to battery
Damage, play a part of protect battery, the packaging film is cheap, low manufacture cost, simply square as battery case manufacture craft
Just, battery cost had both been reduced in this way in turn simplify technical process.
But aluminum plastic film there is also some problems in use, in terms of being mainly reflected in electrolyte resistance performance, from electrolysis
The component of the lithium salts of liquid sees that they are easily hydrolyzed, and meets water and just resolves into extremely strong corrosive hydrofluoric acid and other gases, and
Once hydrofluoric acid invades aluminium foil layer with solvent, aluminium foil surface Nian Jie with hot sealing layer fastly will be broken quickly, makes aluminium foil and interior UF membrane,
Cause more violent electrochemical corrosion, so that packaging structure is destroyed.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of power battery plastic-aluminum membrane preparation method, by by aluminium foil into
It goes after being passivated, then there is the aluminum plastic film of four-layer structure with PET film, nylon, the compound rear formation of polypropylene film, effectively increase aluminium
The electrolyte resistance performance and barrier property of plastic film packaging material, and the service life of material can be extended.
Technical solution provided by the present invention is as follows:
A kind of power battery plastic-aluminum membrane preparation method, comprising the following steps:
(1) processing is passivated to the tow sides of aluminium foil using double oven coating machine, the aluminium foil after obtaining surface passivation,
Wherein, passivating solution is placed at applicator roll,；
(2) using compounding machine by after nylon and surface passivation aluminium foil carry out it is compound after, send to curing room solidification after obtain
Composite nylon/aluminium foil；
(3) composite nylon/aluminium foil and PET film is compound by dry type with compounding machine, it is compounded in PET film on nylon, send
Solidify to obtain compound PET film/nylon/aluminium foil to curing room；
(4) compound PET film/nylon/aluminium foil and polypropylene film is compound by dry type with compounding machine, make polypropylene film
It is compounded in another passivated surface of aluminium foil, send to curing room and solidifies to obtain power battery aluminum plastic film；
(5) it is sent after cooling down the power battery aluminum plastic film that step (4) obtains to cutting workshop, is sent after being cut by setting specification
Inspection is packed after detection is qualified.
Preferably, in step (1), coating machine unwinding tension is 150~160N；Winding tension is 200~400N, applicator roll
Pressure is 0.2~0.3Mpa；Coating machine machine speed is 60~70m/min, and upper oven temperature is 120~180 DEG C, and lower oven temperature is
130~180 DEG C.
It is highly preferred that the temperature control method of lower baking oven is, and an area, 130~150 DEG C；2nd area, 150~170 DEG C；3rd area
170~180 DEG C；4th area, 170~180 DEG C；5th area, 130~150 DEG C.
It is highly preferred that the temperature control method of upper baking oven is, and 6th area, 130~150 DEG C；7th area, 150~170 DEG C；8th area,
170~180 DEG C；9th area, 170~180 DEG C；Tenth area, 120~140 DEG C.
Preferably, in step (2), the aluminium foil after nylon and surface passivation is placed on different let off roll, nylon let off roll
The tension at place is 80~100N, and the tension at aluminium foil let off roll after surface passivation is 100~150N；Nylon is passed through from let off roll
It is worn through composite roll to wind-up roll after glue spreader and several deflector rolls, the aluminium foil after surface passivation passes through composite roll to receipts from let off roll
At winding up roller.
Preferably, in step (2), the temperature at composite roll is 110~130 DEG C；Machine speed is 60~70m/min；Solidification temperature
Degree is 55~70 DEG C.
Preferably, the solidification temperature in step (3) is 60~65 DEG C；Solidification temperature in step (4) is 60~65 DEG C.
Preferably, in step (5), power battery aluminum plastic film is placed on the let off roll of cutting machine, is worn by several deflector rolls
For material to wind-up roll, unwinding tension is 120~150N, and platen pressure is 0.2~0.25MPa, and winding tension is 120~200N, machine
Speed is 80~110m/min.
Preferably, in step (2), nylon need to wherein coat on one side compound adhesive and be placed in baking oven and dry before compound at it
The step for dry, wherein oven temperature adjusting method are as follows: an area, 50~60 DEG C；2nd area, 60~70 DEG C；3rd area, 70~80 DEG C；
4th area, 80~90 DEG C；5th area, 80~90 DEG C.
Compared with prior art, the present invention has following technical advantage:
(1) present invention uses double oven coating machine, and the surface of aluminium foil layer forms special anti-corrosion passivation layer, then with PET film,
The aluminum plastic film with four-layer structure is formed after nylon, polypropylene film are compound, greatly improves the resistance to electrolysis of aluminum plastic film package material
Fluidity energy effectively improves the barrier property of material, effectively extends the service life of material；
(2) present invention uses the painting etamine making process of dry process aluminum plastic film, avoids thermal method and prepares in plastic-aluminum membrane process
The manufacturing conditions of high temperature and pressure effectively maintain the scouring depth performance and product appearance of aluminium foil, and preparation method is simple, are easy to real
Existing, production cost is low, is suitable for popularization and application.
Specific embodiment
Now in conjunction with specific embodiment, the invention will be further described.
Embodiment 1
A kind of power battery plastic-aluminum membrane preparation method, comprising the following steps:
(1) aluminium foil is placed on the anti-winding up roller of double oven coating machine, sets its unwinding tension as 150N, aluminium foil is made to pass through number
After a deflector roll and applicator roll equipped with passivating solution, by baking oven, reach at wind-up roll, after obtaining tow sides Passivation Treatment
Aluminium foil, wherein coating machine winding tension is 200N, and coating roller pressure is 0.2Mpa, and coating machine machine speed is 60m/min, lower baking oven
Temperature control method be an area, 130 DEG C；2nd area, 150 DEG C；Three 170 DEG C of areas；4th area, 170 DEG C；Five 150 DEG C of areas；Upper baking oven
Temperature control method be 6th area, 130 DEG C；7th area, 150 DEG C；8th area, 170 DEG C；9th area, 170 DEG C；Tenth area, 120 DEG C；
(2) nylon is placed on the let off roll A of compounding machine, unwinding tension 80N, the aluminium foil after surface passivation is placed in multiple
On the let off roll B of conjunction machine, unwinding tension 100N pours into deployed compound adhesive in lacquer disk(-sc), opens heating, and baking oven heats up,
Start compounding machine, nylon reaches composite roll after passing through glue spreader, baking oven and several deflector rolls from let off roll, and compound with reaching simultaneously
After aluminium foil after the surface passivation of roller carries out compound, winding, send to curing room and solidify to obtain composite nylon/aluminium foil；Wherein, baking oven
Temperature control method be an area, 50 DEG C；2nd area, 60 DEG C；3rd area, 70 DEG C；4th area, 80 DEG C；5th area, 80 DEG C；Temperature at composite roll
Degree is 110 DEG C；Machine speed is 60m/min；Solidification temperature is 55 DEG C；
(3) composite nylon/aluminium foil and PET film is compound by dry type with compounding machine, it is compounded in PET film on nylon, send
Solidify to obtain compound PET film/nylon/aluminium foil to curing room, solidification temperature is 60 DEG C；
(4) compound PET film/nylon/aluminium foil and polypropylene film is compound by dry type with compounding machine, make polypropylene film
It is compounded in another passivated surface of aluminium foil, send to curing room and solidifies to obtain power battery aluminum plastic film, solidification temperature is 60 DEG C；
(5) it is sent after cooling down the power battery aluminum plastic film that step (4) obtains to cutting workshop, is placed on unreeling for cutting machine
On roller, power battery aluminum plastic film wears material to wind-up roll by several deflector rolls, and unwinding tension is set as 120N, and platen pressure is set as
0.2MPa, winding tension are set as 120N, as required adjustment cutting width, start cutting machine, and machine speed is 80m/min, by setting rule
Lattice cut rear inspection, pack after detection is qualified.
Embodiment 2
(1) aluminium foil is placed on the anti-winding up roller of double oven coating machine, sets its unwinding tension as 155N, aluminium foil is made to pass through number
After a deflector roll and applicator roll equipped with passivating solution, by baking oven, reach at wind-up roll, after obtaining tow sides Passivation Treatment
Aluminium foil, wherein coating machine winding tension is 300N, and coating roller pressure is 0.2Mpa, and coating machine machine speed is 65m/min, lower baking oven
Temperature control method be an area, 140 DEG C；2nd area, 160 DEG C；Three 175 DEG C of areas；4th area, 175 DEG C；5th area, 140 DEG C；Upper baking oven
Temperature control method be 6th area, 140 DEG C；7th area, 160 DEG C；8th area, 175 DEG C；9th area, 175 DEG C；Tenth area, 130 DEG C；
(2) nylon is placed on the let off roll A of compounding machine, unwinding tension 90N, the aluminium foil after surface passivation is placed in multiple
On the let off roll B of conjunction machine, unwinding tension 120N pours into deployed compound adhesive in lacquer disk(-sc), opens heating, and baking oven heats up,
Start compounding machine, nylon reaches composite roll after passing through glue spreader, baking oven and several deflector rolls from let off roll, and compound with reaching simultaneously
After aluminium foil after the surface passivation of roller carries out compound, winding, composite nylon/aluminium foil is obtained after sending to curing room solidification；Wherein, it dries
Case temperature control method be an area, 55 DEG C；2nd area, 65 DEG C；3rd area, 75 DEG C；4th area, 85 DEG C；5th area, 85 DEG C；At composite roll
Temperature is 120 DEG C；Machine speed is 65m/min；Solidification temperature is 60 DEG C；
(3) composite nylon/aluminium foil and PET film is compound by dry type with compounding machine, it is compounded in PET film on nylon, send
Solidify to obtain compound PET film/nylon/aluminium foil to curing room, solidification temperature is 62 DEG C；
(4) compound PET film/nylon/aluminium foil and polypropylene film is compound by dry type with compounding machine, make polypropylene film
It is compounded in another passivated surface of aluminium foil, send to curing room and solidifies to obtain power battery aluminum plastic film, solidification temperature is 62 DEG C；
(5) it is sent after cooling down the power battery aluminum plastic film that step (4) obtains to cutting workshop, is placed on unreeling for cutting machine
On roller, power battery aluminum plastic film wears material to wind-up roll by several deflector rolls, and unwinding tension is set as 130N, and platen pressure is set as
0.22MPa, winding tension are set as 170N, as required adjustment cutting width, start cutting machine, machine speed is 100m/min, by setting
Specification cuts rear inspection, packs after detection is qualified.
Embodiment 3
(1) aluminium foil is placed on the anti-winding up roller of double oven coating machine, sets its unwinding tension as 160N, aluminium foil is made to pass through number
After a deflector roll and applicator roll equipped with passivating solution, by baking oven, reach at wind-up roll, after obtaining tow sides Passivation Treatment
Aluminium foil, wherein coating machine winding tension is 400N, and coating roller pressure is 0.3Mpa, and coating machine machine speed is 70m/min, lower baking oven
Temperature control method be an area, 150 DEG C；2nd area, 170 DEG C；Three 180 DEG C of areas；4th area, 180 DEG C；5th area, 150 DEG C；Upper baking oven
Temperature control method be 6th area, 150 DEG C；7th area, 170 DEG C；8th area, 180 DEG C；9th area, 180 DEG C；Tenth area, 140 DEG C；
(2) nylon is placed on the let off roll A of compounding machine, the aluminium foil after surface passivation is placed in by unwinding tension 100N
On the let off roll B of compounding machine, unwinding tension 150N pours into deployed compound adhesive in lacquer disk(-sc), opens heating, baking oven liter
Temperature starts compounding machine, and nylon reaches composite roll after passing through glue spreader, baking oven and several deflector rolls from let off roll, and with reach simultaneously
After aluminium foil after the surface passivation of composite roll carries out compound, winding, composite nylon/aluminium foil is obtained after sending to curing room solidification；Its
In, oven temperature adjusting method be an area, 60 DEG C；2nd area, 70 DEG C；3rd area, 80 DEG C；4th area, 90 DEG C；5th area, 90 DEG C；Composite roll
The temperature at place is 130 DEG C；Machine speed is 70m/min；Solidification temperature is 70 DEG C；
(3) composite nylon/aluminium foil and PET film is compound by dry type with compounding machine, it is compounded in PET film on nylon, send
Solidify to obtain compound PET film/nylon/aluminium foil to curing room, solidification temperature is 65 DEG C；
(4) compound PET film/nylon/aluminium foil and polypropylene film is compound by dry type with compounding machine, make polypropylene film
It is compounded in another passivated surface of aluminium foil, send to curing room and solidifies to obtain power battery aluminum plastic film, solidification temperature is 65 DEG C；
(5) it is sent after cooling down the power battery aluminum plastic film that step (4) obtains to cutting workshop, is placed on unreeling for cutting machine
On roller, power battery aluminum plastic film wears material to wind-up roll by several deflector rolls, and unwinding tension is set as 150N, and platen pressure is set as
0.25MPa, winding tension are set as 200N, as required adjustment cutting width, start cutting machine, machine speed is 110m/min, by setting
Specification cuts rear inspection, packs after detection is qualified.
Claims (9)
1. a kind of power battery plastic-aluminum membrane preparation method, it is characterised in that the following steps are included:
(1) processing is passivated to the tow sides of aluminium foil using double oven coating machine, the aluminium foil after obtaining surface passivation,
In, passivating solution is placed at applicator roll,；
(2) using compounding machine by after nylon and surface passivation aluminium foil carry out it is compound after, send to curing room solidification after obtain it is compound
Nylon/aluminium foil；
(3) composite nylon/aluminium foil and PET film is compound by dry type with compounding machine, it is compounded in PET film on nylon, send to solid
Change room to solidify to obtain compound PET film/nylon/aluminium foil；
(4) compound PET film/nylon/aluminium foil and polypropylene film is compound by dry type with compounding machine, keep polypropylene film compound
In another passivated surface of aluminium foil, send to curing room and solidify to obtain power battery aluminum plastic film；
(5) it is sent after cooling down the power battery aluminum plastic film that step (4) obtains to cutting workshop, cuts rear inspection by setting specification,
It is packed after detection is qualified.
2. a kind of power battery plastic-aluminum membrane preparation method according to claim 1, it is characterised in that: in step (1), coating
Machine unwinding tension is 150~160N；Winding tension is 200~400N, and coating roller pressure is 0.2~0.3Mpa；Coating machine machine speed
For 60~70m/min, upper oven temperature is 120~180 DEG C, and lower oven temperature is 130~180 DEG C.
3. a kind of power battery plastic-aluminum membrane preparation method according to claim 2, it is characterised in that: the temperature tune of lower baking oven
Section method is an area, 130~150 DEG C；2nd area, 150~170 DEG C；Three 170~180 DEG C of areas；4th area, 170~180 DEG C；5th area,
130~150 DEG C.
4. a kind of power battery plastic-aluminum membrane preparation method according to claim 2, it is characterised in that: the temperature tune of upper baking oven
Section method is 6th area, 130~150 DEG C；7th area, 150~170 DEG C；8th area, 170~180 DEG C；9th area, 170~180 DEG C；Ten
Area, 120~140 DEG C.
5. a kind of power battery plastic-aluminum membrane preparation method according to claim 1, it is characterised in that: in step (2), nylon
It is placed in the aluminium foil after surface passivation on different let off roll, the tension at nylon let off roll is 80~100N, after surface passivation
Aluminium foil let off roll at tension be 100~150N；Nylon is worn after glue spreader and several deflector rolls through composite roll from let off roll
To wind-up roll, the aluminium foil after surface passivation passes through from composite roll to wind-up roll from let off roll.
6. a kind of power battery plastic-aluminum membrane preparation method according to claim 1, it is characterised in that: compound in step (2)
Temperature at roller is 110~130 DEG C；Machine speed is 60~70m/min；Solidification temperature is 55~70 DEG C.
7. a kind of power battery plastic-aluminum membrane preparation method according to claim 1, it is characterised in that: consolidating in step (3)
Changing temperature is 60~65 DEG C；Solidification temperature in step (4) is 60~65 DEG C.
8. a kind of power battery plastic-aluminum membrane preparation method according to claim 1, it is characterised in that: in step (5), power
Cell aluminum-plastic membrane is placed on the let off roll of cutting machine, wears material to wind-up roll by several deflector rolls, and unwinding tension is 120~
150N, platen pressure are 0.2~0.25MPa, and winding tension is 120~200N, and machine speed is 80~110m/min.
9. a kind of power battery plastic-aluminum membrane preparation method according to claim 1, it is characterised in that: in step (2), nylon
Before compound, compound adhesive need to be wherein coated on one side at it and be placed in the step for drying in baking oven, wherein oven temperature adjusting side
Mono- area Fa Wei, 50~60 DEG C；2nd area, 60~70 DEG C；3rd area, 70~80 DEG C；4th area, 80~90 DEG C；5th area, 80~90 DEG C.
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| CN201910477413.1A CN110216891A (en) | 2019-06-03 | 2019-06-03 | A kind of power battery plastic-aluminum membrane preparation method |
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| CN201910477413.1A CN110216891A (en) | 2019-06-03 | 2019-06-03 | A kind of power battery plastic-aluminum membrane preparation method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113878963A (en) * | 2021-09-26 | 2022-01-04 | 珠海市赛纬电子材料股份有限公司 | Aluminum-plastic composite film and preparation method thereof |
| CN114843664A (en) * | 2022-03-29 | 2022-08-02 | 佛山市中技烯米新材料有限公司 | Power battery aluminum plastic film |
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| CN102343693A (en) * | 2010-07-30 | 2012-02-08 | 藤森工业株式会社 | Laminating member for battery package |
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| CN102343693A (en) * | 2010-07-30 | 2012-02-08 | 藤森工业株式会社 | Laminating member for battery package |
| CN102709498A (en) * | 2012-05-30 | 2012-10-03 | 东莞市比比克电子科技有限公司 | Aluminum-plastic packaging film and lithium ion battery manufactured by using same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113878963A (en) * | 2021-09-26 | 2022-01-04 | 珠海市赛纬电子材料股份有限公司 | Aluminum-plastic composite film and preparation method thereof |
| CN114843664A (en) * | 2022-03-29 | 2022-08-02 | 佛山市中技烯米新材料有限公司 | Power battery aluminum plastic film |
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Application publication date: 20190910 |